Water heater



v g. -25, 1931. E, PAGET 1,820,318 l WATER HEATER Filed Dec'. 29, 1928 2Sheets-Sheet l "u :mmm

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Aug. 25, v1931.

H. E. PAG ET WATER 'HEATER Filed nec. `29, 192s 2 Sheets-Sheet 2 rPatented Aug.v Z5, 1931 HARRY E. PAGET, F emanen,'ILLINOISv j'Application-filed'Decembert29y1928i.' Serial No.3'329,281'. v

This invention relatesto` Water-heaters, and morey particularly to thattype of heater Wherein'fthe Water to be heated Vis passed l with easeand facility. Y y r2.5'

through coils which arelocated ina casing or chamber, said coils being.surrounded by abody of hot Water or steam. In most cases, according tothe present day practice, -it is customary to connect these heaterswith* an ordinary steam' boiler or hot Water,` boiler ,of

' cfa) The present invention has for` its principal" object toproduce asimple and inexpensive yet highly efficient and practical structure,Which may be assembled and dismantled Other objects Vand advantages tobef attained Will more ffully appearin-the yfollow,- ing description. f5

The invention consists in the novel features of construction and in theparts` and con1` binations and arrangement of part-si'herem-r vafterdescribed and pointedrout with particularity in the appended'claims; y,

AIn the accompanying drawings part of this specification,

Figure 1 1s a vieW ill-ustrating'a v forming installation of a heateraccording toythe presn ent invention; y

Figure 2 is a top plan View. of the heater; VFigure 3 is a verticalsectionth'rough the y heater, taken on or .about kthe yline 3-3l ofFigure 4 is a transverse section taken ony or about the line 4 4 ofFigure 3; andv y .Figure 5 is a fragmentary vertical section of theupper portion of a 'modification of the structure. 1 f, Referring noW tothe drawings, the numeral designates, generally.^the waterheater Y ofthe present invention, vvhichlatter is 'connected to a-boiler- 11 of 'anordinary hot Water a regular heating plant, by which arran e or steamheating plant'. VThe connection be# tween theheatervlland `boiler 11 iseffected v through thev pipes 12 and 13, both ofwhich connections are,obviously, belowkfthenormal Water level inthe boiler 11, so as ,toinsure' a circulation of` hot Water through 'the chamy fully described.The heater 10, as shovvmis connected to an ordinary hot Water.v storagetank 1 4 bv' the pines 15 and 16, through which connections the Water'inthe tank 14 is cirber'in the heater ,10, as lvvill belater more culatedthrough the coilslof theheater 10 so- A as to be heated thereby, as Willbe presentlyV set forth. Y 1

f Ihe heater ,of the present invention coml prisesl a casing orshelllZpreferably of cylindrical form, and having a closed-endlS, I

vvhich latter extend-s a nipple 19 having an .axial bore 20 therein.y .lThe; opposite end of the casing 1:7 is provided With a removableendiclosure or head 21, said end closure or head having an annularcollar or flange 22 which fits just insidef'the end of the casing Y 17.`lSurrounding thecollar or lianeje 22 isaV gasket 23 for makingajleaktight. joint be# tween theafend of the casing 17 andthe endclosure or head y2'1 Whenthe marginal series` of rbolts-24;'a-retightenefd.`r

At the .center of the end o isa threaded nipple extension v25 having ,a

bore 26` which veornmiilnicates With thepas- Vsa,g ,'eway27 extendingvradially .of the head 21 a and terminating with a port 28, whichlatter. 4 registers with a port-29 in. alateral lug onjthe casing 17,and thereby establishesfcom closure orhead21f munication `with the-.pipe connection 15 to'` the storage tank lit as r'stherein described..Within thecasing 17 is a coilV 31 ypreferably of copper tubing. To oneend o-ftliis coil is Vattached a special itting or terminal element ,f

32, the latter having an elbow portion 32 intowhich the endof the coilis .ittedwand secu-redas by soldering or Welding to ailorda' 'strong andleak-tight joint.'k The element 32 hasan axial angular extensionl at theend i yof' which is a collar 3A which is detachably secured yto thenipple extension 25'V ofthe.k head 21 byrarcoupling nut 35, a suitablegasketror packing vWasher 36 .being interposed between the adjacent end'portionsof thenipple 25 and extension 33 of the fixture 32. At theopposite end of the coil 31 is a fixture 37 which is similar to thefixture except that it has a nipple extension 38 which extends throughthe bore of the nipple extension 19 of the end portion 18 of the casing17, said nipple extension 38 being screw threaded at its outerend/portion to receive thereon the lock nut 39, which latter impingesthe end of the nipple 19 to secure the lower end of the coil with aleak-tight connection, and there being preferably provided a washer orgasket 40 between the nut and nipple. The nipple extension 38 of thefixture 37- is provided with a port 41 to register with an opening 42 inthe nipple extension 19, in which opening 42 is inserted the end of thepipe connection 16.

The peculiar end fittings 32 and 37 are essential and important featuresof the present invention, in that they serve to center the coil withinthe casing 17 and, further, these fittings make it possible to utilizestandard coils of a given diameter but of different lengths. In this waythe coils may be obtained in long lengths and the particular 'coil tofit a heater casing 17 of a certain predetermined size inay be cuttherefrom, and the fittings 32 and 37 attached to the respective endsthereof: and the portions 33 and 38, respectively, of the fittings arealways in axial alignment.

In assembling the heater the fitting 32 of the coil 31 is first attachedto the nipple portion of the end closurel or head 21. It is then an easymatter to insert the coil 31 into the open end of the casing 17 and projeet the nipple portion 38 at the opposite end of the coil 31 through thebore 20 in the nipple extension 19 of the closed end portion 18 of saidcasing. The head 21 is then adjusted to the open end portion of thecasing 17, the gasket 23, of course, having first been placed inposition on the head 21, the collar or fiange 22 on the inner side ofsaid head holding said gasket in place and also facilitating thelocating of the head on the casing as said collar or fiange fits rathersnugly within the casing. The head is releasably secured in place bytightening the Vnuts on the bolts 24, the gasket 23 making the jointurebetween the head and casing leak-tight and the gasket 36 likewisesealing the jointure between the head and the fitting 32 of the coil 31.The lock nut 39 is then tightened against the nipple portion 19 of theclosed end 18 of the casing 17 and the washer 40 which is interposedbetween said nut 39 and portion 19 and another washer 43 interposedbetween the inner face of the closed end portion 28 of the casing andthe collar 44 on the fitting 37 making this connection leak-tight. Eachof the jointures just above described is easily accomplished without anyinterference from the others, each one being absolutely independent ofthe other and so permitted because there is a certain amount of give tothe coil 31 in a longitudinal direction. When it is desired to take theheater apart, the nut 39 is detached from the nipple extension 38 of thefitting 37 and the bolts 24 are removed, whereupon the end closure orhead 21 with the attached coil 31 may be readily withdrawn 'from thecasing 17.

In some cases where it may not be desirable or practical to disconnectthe fitting 37 from the closed end of the casing 17, the structure maybe modified as illustrated in Figure 5 of the drawings, in which.modification the end closure or head 21 may be disconnected from thefitting by which it is coupled to the coil 31. In this modification, afitting substantially the saine the fitting 37 is substituted in placeof the aforementioned fitting 32. That is to say, the fitting designatedgenerally by the numeral 37 has a nipple extension 45 which is projectedthrough an opening in a boss 4G on the end closure or head 21 and on thethreaded outer end portion of said nipple extension. 45 is placed capnut 47 between which latter and said boss 46 is interposed a gasket orwasher 48, said gasket 48 and another gasket 49 interposed between thenipple extension 25 and the collar 50 on said tting 37 making theointures leak-tight. Said nipple extension 45 is provided with a port 51to register with the passageway V27 in said end closure or head 21. Inother respects the structure is identical with that first hereindescribed.

In assembling` the heater constructed according to the abovemodification, the coil may be first placed in the casing 17v and securedto the closed end portion 18. The end i105 closure or head 21 may bethen secured in place on the casing and the cap nut 47 finally appliedto the nipple extension 45 of the coupling fixture 37.

In some cases the nut 39 may be closed by a suitable plug, and in othercases a cap nut similar to nut 47 may be substituted for said nut 39.'.However, it ispref'erable to attach a short pipe or nipple 52 to saidnut 39 and -provide on said member 52 a drain cock 53. By the latterarrangement the coil 31 is easily fiushed, when necessary, by simplyopening the drain cock. In localities where the water contains lime inquantities, whereby the outer surface of the 'coil becomes coated, itisbut a simple matter to remove the coil from the casing 17 ashereinbefore pointed out.

Obviously, the heater maybe 'further modified in its structural detailswithout departing `from the spirit and scope o-i the invention asdefined in the appended claims. The invention, therefore, is notVlimited to the specific construction and arrangement shown in theaccompanying drawings.

Having thus described my invention, what I claim as'new and desire tosecure by vLetters Patent is: y Y

1. In a` water heater ofthe character described, a longitudinallyelongated casing having an integral' end wall, and having provision nearits Vopposite ends for pipe connections, a removable head for closingthe end of said casing opposite to its integralend wall, said integralend wall of the vcasf ing having an external axial ,nipple extension,said nipple extension having a lateral opening for a pipe connection,said removable head having an internal laxial vnipple extension and alateral passageway communicable with said nipple extension and a pipeconnectionk provided therefor at the adjacent end of said casing, atubular coil extending longitudinallyiwitliin said casing, Vsaid coilhaving an axial nipple-extension at one end fitted within the nippleextension of (he vintegral end wallof said casing andy hav,-

` ing a lateral opening communicable with said f lateral opening Lofsaid last mentioned nipple extension, means for detachably securing saidaxial extension of said coil to said integral end wall of thecasing,'said coilV having an axial extension at its oppositeend, andmeans for detachably connecting said last mentioned axial end extensionto said nipple extension of said removable head. f

2. In a water heater of the character described7 ak verticallyfdisposedlongitudinally elongated casing having an integral bottom end wall, aremovable head for the upper endy of said casing, `said bottom end wallhaving an external axial nipple extensionprovided with a lateral openingfor a pipe connection, said removable head having an internal axialnipple extension and a lateral passageway Vprovidingcommunication-between said nipple extension thereof and a lateralpipe'con-v nection at the adjacent'end of said casing, a

tubular-coil in said casing having axial fend extensions, and means fordetachably'connecting the axial endfextensions of said coilrespectivelyto said nipple extensions of said `end wall and saidremovable'head.

encasing shell.

on one end of said coil yincluding an angular extension, anelbowportion, a collar, and a threaded coupling nut for detachably couplingthe said fitting on the extension of the` removablehead, substantiallyas described.

6, In a` water heater of the character described, a `casinghavinga borein thevend thereof anda removable head, a tubular coil.

within said casing, said coil being detachably connected at one end tothe removable head and having at its other end a fitting including anangular extension, an elbow portion, a 'col-V lar toseat the fittingonsaid bore, and a nipple' extension for insertion through said bore.

7. In a coupling element fora coil, a tting including an angularextension, an elbow portion, 'a collar, and a said fitting.

In testimony whereof I have signed my name to this specification. e

' HARRY PAGET.

linternal extension on said removablehead, a' VVtubular 'coil withinsaid casing, and a fitting threaded coupling nut `on' 3. In a device foredecting temperatures,`

a' casing having provision for pipe connec# n tions, a removable head,anV external exten-1 sion in combinationwith said casing,-sa1d`ex.

tensionl having a lateral opening for `apvpipe f Y connection, aninternal extension on said removable head having a passagewaycommunieating said extension with a pipe connection,

. a coil within said casing having an extension at one endl to it withinthe extension of the casing aforesaid, said extension having means forpermitting communication between said l'coil anda pipe connection, meansfor detachably securing said extension .of said coil to said casing, anextension at the opposite end of said coil, and means for'detachably,securing said extensionf't'o the extension of the removable head.

